{"id":"CVE-2026-40583","state":"PUBLISHED","title":"UltraDAG: SmartOp Vote Path Triggers Fatal Supply Invariant Halt","description":"UltraDAG is a minimal DAG-BFT blockchain in Rust. In version 0.1, a non-council attacker can submit a signed SmartOp::Vote transaction that passes signature, nonce, and balance prechecks, but fails authorization only after state mutation has already occurred.","publishedAt":"2026-04-21T16:57:42.100Z","updatedAt":"2026-04-21T20:37:16.729Z","severity":{"score":8.8,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/U:Red","source":"GitHub_M"},"assigner":"GitHub_M","products":["UltraDAGcom core"],"affected":[{"vendor":"UltraDAGcom","product":"core","versions":[{"version":"= 0.1","status":"affected"}]}],"references":["https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp","https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be","https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511"],"weaknesses":["CWE-460","CWE-696"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40583.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40583","state":"PUBLISHED","datePublished":"2026-04-21T16:57:42.100Z","dateUpdated":"2026-04-21T20:37:16.729Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-14T13:24:29.475Z"},"containers":{"cna":{"title":"UltraDAG: SmartOp Vote Path Triggers Fatal Supply Invariant Halt","descriptions":[{"lang":"en","value":"UltraDAG is a minimal DAG-BFT blockchain in Rust. In version 0.1, a non-council attacker can submit a signed SmartOp::Vote transaction that passes signature, nonce, and balance prechecks, but fails authorization only after state mutation has already occurred."}],"affected":[{"vendor":"UltraDAGcom","product":"core","versions":[{"version":"= 0.1","status":"affected"}]}],"references":[{"url":"https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp","name":"https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be","name":"https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be","tags":["x_refsource_MISC"]},{"url":"https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511","name":"https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/U:Red","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-460","lang":"en","description":"CWE-460: Improper Cleanup on Thrown Exception","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-696","lang":"en","description":"CWE-696: Incorrect Behavior Order","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-21T16:57:42.100Z"},"source":{"advisory":"GHSA-q8wx-2crx-c7pp","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-21T20:09:12.285156Z","id":"CVE-2026-40583","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-21T20:37:16.729Z"}}]}}}